Pneumatic wheel



Aug. 18, 1925.

P. VELASCO PNEUMATIC WHEEL med Aug.' 21,` 1923 2 sheets-sheet 1 gwltmdozZ7 750.960,-

Aug. 18, 1925.

P. vELAszol k- Y PNEUMATIC whim. f Filed Aug. 21, 192sv 2 sheets-sneer@ma /M i, v ...M

atto: nu;

Patented Aug. 18, 1925'.

UNITED STATES PATENT OFFICE? PEDRO VELASCO, OF DETROIT, MICHIGAN.-

PNEUMATIGIWVHEEL.

Applicationled August 2:1, 1923. Serial Nro. 658,603.

To all whom t may concern.'

Be it known that PEDRO VELASCO, a subject of Mexico, residing atDetroit, in the county of l/Vayne and State of Michigan,

hasinvented new and useful Improvementsl in Pneumatic lVheel's, ofwhich'the followingis a specification.

The object of 'the invention is to provide a wheel construction of thecushioned type whereby the necessity of employing pneumatic or similartires may be avoided without det-racting from the required resilienceofthe vehicle truck or running gear, and more particularly to provide acushioned wheel'which without being of objectionable weight is adaptedto absorb shocks of practically unlimited o'rcefwith the. minimumltendency to distort and disarrange the ele# ments; and with thisobject'in `View the invention consists in a construction and combinationof parts of which a preferred embodiment is shown in the accompanying Vend is interiorly threaded at its outerend` drawings, wherein Figure lis a side view partly Vin section7 and Y Figure 2 is a cross sectionalview of 'a wheel constructed in accordance with the invention.

l/Vithin a suitable rim 10 adapted to carry a tire'l of any preferredvariety is arranged a group of cylinders 12 arranged in parallel serieswith the elements of each' series disposed 1n a common-relation with therim and with the elements 'of the two series arranged in angularlyopposed re-V The pistons 13 in said cylinders of" each series areconnected' by rodsv 14 with' lation.

one of the hub disks 15, a pivotal mounting being afforded vby means ofa bolt 16 at the inner end of each piston rod. l.

In 'the construction illustrated, the wall of each cylinder which isopen atits inner to receive a threaded plug 17 ormingrpart of a block 18secured by screws 20 to the rim, so that 'to dismember the wheel it isonly necessary to unscrew the cylinders from the blocks. The cylindersare preferably charged with air under pressure through air valves 19,and the degree of compression is dependent upon the load for which theparticular wheel is designed. It

lis obvious that the contents of 'the cylinder beingv a compressivefluid will yield to nio=vement of the pistons due to shocks and jarsimposed upon the wheely through the tire or through the hub" and that asubstantially balanced relation oi the wheel will be maintained.normally when the cylinders are,

charged at a substantially uniform pressure.

IThe cylinders are pitched-transversely as shown in Figure- 2 to give'the eii'ect of a centrally bowed wheel with the` inner ends' of thepiston rods of the two series spaced apart a dlstance suiicient toaliordthe required transverse stiffness while the outer ends or bases ofthe cylinders are arranged substantially 1n a common plane. The axes othe cylinders and the pist-on Vrods 'extendlng therefrom and disposed intangential relation with the hub, all of the cylinders of each serieshaving the same tangential relation with the hub and with the cylindersof the twov series' arranged in angularly opposed` tangential relationtherewith so that the cushioning elements 4of the' two series act in acompensatory relation.

Having described the invention, what is claimed as new and useful isz-fY 1. A pneumatic wheel having a rim and hub of which the former carriescylinders provided with pistons of' which the rods are pivotallyconnected at their inner ends PEDRO vELAsoo.

